Condair Modbus RTU Manual de usuario
Modbus
Installation and
Operation Manual
Using Modbus with Condair
Humidifiers. Includes installation,
operation maintenance and
troubleshooting information.
2560599-F | 15 June 2018
Important: Read and save these instructions. This guide to be left with equipment owner.
Thank you for choosing Condair.
Proprietary Notice
This document and the information disclosed herein are proprietary data of Condair Group AG. Neither this
document nor the information contained herein shall be reproduced, used, or disclosed to others without the
written authorization of Condair Group AG., except to the extent required for installation or maintenance of
recipient’s equipment.
Liability Notice
Condair Group AG does not accept any liability for installations of humidity equipment installed by unqualified
personnel or the use of parts/components/equipment that are not authorized or approved by Condair Group
AG.
Copyright Notice
Copyright 2018, Condair Group AG. All rights reserved.
INSTALLATION DATE (MM/DD/YYYY)
MODEL #
SERIAL #
CYLINDER #
Contents
Introduction 2
Requirements 2
Wiring Connections 2
EL/NH-EL Models 4
NHTC, GSTC, SETC, and MHTC Models 5
MES2 and RH2 Models 5
NHRS Models 5
Addressing and Communications 10
EL Electrode Steam Humidifiers 10
NH-EL Electrode Steam Humidifiers 16
NHTC Electrode Steam Humidifiers 21
GSTC Gas Fired Steam Humidifiers 27
SETC Steam Exchange Humidifiers 31
MHTC Evaporative Media Humidifiers 35
MES2 and RH2 Models 39
NHRS Electric Steam Humidifiers 46
Troubleshooting 49
Appendix A 52
Modbus –Field Retrofit for NHRS Models 52
1 | Modbus Installation
CAUTION: Servicing
Disconnect main power before any servicing.
The plumbing and electrical compartments contain high voltage components and
wiring. Access should be limited to authorized personnel only.
During and following operation of the humidifier, the steam and components in
contact with the steam such as the blower pack, steam lines, steam distributors,
and condensate lines can become hot and can burn if touched.
Condair Group AG does not accept any liability for installations of humidity
equipment installed by unqualified personnel or the use of
parts/components/equipment that are not authorized or approved by Condair
Group AG.
CAUTION: Electrical
All electrical work should be done according to local and national electrical code.
Electrical connection to be performed by a licensed electrician.
CAUTION: Installation
Do not mount on hot surfaces.
Do not mount in area where freezing can occur.
Do not mount on vibrating surface.
Do not mount on floor.
Regardless of selecting on/off or modulating control method, Condair humidifiers
must have a closed circuit across its on/off security loop control terminal to
operate. Condair highly recommends the use of a duct high limit humidistat.
Modbus Installation | 2
Introduction
Many Condair humidifiers feature control boards that include Modbus RTU and can connect to
Modbus networks right out of the box. This document describes how to connect these
humidifiers to such a network and defines the parameters that may be monitored.
Please note that there are differences between Modbus RTU and Modbus TCP. Condair
humidifiers are Modbus RTU capable and require a gateway (by others) for Modbus TCP
networks. Contact the factory for more information on Modbus TCP communications.
Requirements
EL/NH-EL Humidifiers are capable of Modbus RTU and require no additional hardware for this
connection.
Condair humidifiers that feature that Total Controller (“TC”) control boards are also capable of
Modbus RTU. These include the NHTC, the GSTC, SETC, and MHTC humidifiers.
Additionally, the RH2 and MES-2 models feature a digital control board that supports Modbus,
however these models require an adapter board to provide the Modbus interface. Finally, the
NHRS also supports Modbus communications; however a TTL converter is required for this
functionality. Refer to following table for more information, items described as “optional” are
for convenience (but not required for Modbus), while items listed as required are needed for
Modbus functionality:
Table 1: Modbus Accessories
Part
Number
Kit Name
Kit Description
2553787
NHTC, GSTC, SETC Modbus Connection
Optional adapter cable for NHTC, GSTC, SETC.
2560630
MHTC Modbus Interface
Optional terminal block for MHTC Modbus interface.
2531585
Modbus Option for OEM Digital Board
Required adapter board and terminals for Modbus
connections.
2560631
NHRS Modbus converter
Required TTL converter for NHRS Modbus
connections.
Please consult your local Condair representative to orders connection kits.
Wiring Connections
Using the correct wiring between the humidifier and the Modbus network is important to ensure
reliable communications and reduce the impact of electrical interference. The recommended
wire type is 18 -24 AWG, shielded twisted pair wire with 120 Ohm characteristic impedance. As
an alternative, CAT-5 (“Ethernet”) cable exceeds these specifications and may be used. In this
case, only two of the conductors and the wire shield will be used; care must be taken to isolate
any unused conductors.
Regardless of which wire type is used ensuring the correct shield terminations is necessary to
prevent electrical interference. The wire shield should be terminated at either the humidifier or
the Modbus system, but not both. This allows induced current to “drain”; if the shield is
terminated at both ends it will function as a conductor and can actually increase electrical
interference. To minimize signal loss a wire run should not exceed 2000 feet. Additionally, to
ensure communication reliability, it is recommended that no more than 8 humidifiers are
3 | Modbus Installation
connected to a single chain/bus. The humidifiers should be the same type but do not need to
be the same capacity. For example it is not recommended to have an NHTC and a GSTC as part
of the same chain, but it is acceptable to have an NHTC-200 and an NHTC-30 as part of the
same chain. Connecting additional non-Condair equipment into a Modbus chain is possible;
however it is important to ensure that all devices are operating with identical baud rate, parity,
and stop bits, and that each device has a unique Modbus address.
Figure 1: Example Daisy Chain Diagram for EL/NH-EL, NHTC, GS, SE
Modbus Installation | 4
EL/NH-EL Models
The EL/NH-EL models use a 3-pole connector on the main processor card for Modbus
connection. This 3-pole connector is provided with all EL/NH-EL and connections can be made
directly to this plug. Refer to Figure 2 and Figure 3 for connection location and wiring.
Please note: there is a 120 Ohm termination resistor available on board. When the jumper J4
is on, 120 Ohm is enabled. When the jumper J4 is off, 120 Ohm is disabled.
Figure 2: EL/NH-EL Modbus 3-Pole Plug Location
5 | Modbus Installation
NHTC, GSTC, SETC, and MHTC Models
The NHTC, GSTC, SETC, and MHTC models use a multifunction RJ45 plug on the mainboard to
provide Modbus communications. Connections can be made directly to this plug or,
alternatively, using one of accessories listed above.
Refer to figure 4 for information on the wiring connections for these units.
Note: This instruction manual covers the connections and points for the GSTC B+ and SETC B+
models only. Older models, manufactured pre-2009 do not include the RJ45 plug and require
an additional interface cable. Contact Condair for information on connecting these units.
MES2 and RH2 Models
The MES2 and RH2 models require a Modbus support board to provide a connection point. This
board can be factory installed if indicated at time of order, or retrofit to existing units in the field.
Refer to Figure 5 for information on the wiring connections for these units.
NHRS Models
The NHRS models require a Modbus kit to translate information from the processor board into
Modbus RTU information. This kit can be factory installed if specified at time of order or retrofit
to existing units in the field. Refer to figure 6 for information on the wiring connections for these
units.
Modbus Installation | 6
Figure 3: EL/NH-EL Modbus Wiring Diagram
7 | Modbus Installation
Figure 4: TC Modbus Wiring Diagram
Tabla de contenidos
Manuales populares de Transductor de otras marcas
Mianyang Weibo Electronic
Mianyang Weibo Electronic WB Series Manual de usuario
ProMinent
ProMinent Dulcometer DMT Manual de usuario
MKS
MKS MicroPirani 925 Series Cómo utilizar
WIKA
WIKA WU-20 Manual de usuario
Alcatel Vacuum Technology
Alcatel Vacuum Technology BARATRON 622A Manual de usuario
Camille Bauer
Camille Bauer SIRAX CH-5610 Manual de usuario
